.proto {
    background-color: rgba(223, 222, 222, 0.7);
    overflow: hidden;
    padding: 30px 50px;
    box-sizing: border-box;
  }
  .proto h2 {
    text-align: center;
    margin-top: 30px;
    margin-bottom: 50px;
  }
.content2 {
    margin-top: 30px;
}
.content2 button{
    width: 200px;
    height: 50px;
    border-radius: 20px;
    font-size: large;
    position: relative;
    /* left: 42%; */
}

#flex{
  display: flex;
  justify-content: center;
}